标签：out context jar col rest type his oid oca
单机本地运行storm报错：
错误如下：
java.lang.NullPointerException: null at test2.Spot2.nextTuple(Spot2.java:27) ~[classes/:na] at backtype.storm.daemon.executor$fn__3371$fn__3386$fn__3415.invoke(executor.clj:572) ~[storm-core-0.9.6.jar:0.9.6] at backtype.storm.util$async_loop$fn__460.invoke(util.clj:463) ~[storm-core-0.9.6.jar:0.9.6] at clojure.lang.AFn.run(AFn.java:24) [clojure-1.5.1.jar:na] at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131] 11586 [Thread-22-spout] ERROR backtype.storm.daemon.executor - java.lang.NullPointerException: null at test2.Spot2.nextTuple(Spot2.java:27) ~[classes/:na] at backtype.storm.daemon.executor$fn__3371$fn__3386$fn__3415.invoke(executor.clj:572) ~[storm-core-0.9.6.jar:0.9.6] at backtype.storm.util$async_loop$fn__460.invoke(util.clj:463) ~[storm-core-0.9.6.jar:0.9.6] at clojure.lang.AFn.run(AFn.java:24) [clojure-1.5.1.jar:na] at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131] 11588 [Thread-27-__system] INFO backtype.storm.daemon.executor - Preparing bolt __system:(-1) 11591 [Thread-27-__system] INFO backtype.storm.daemon.executor - Prepared bolt __system:(-1) 11591 [Thread-20-__system] INFO backtype.storm.daemon.executor - Prepared bolt __system:(-1) 11594 [Thread-17-bolt] INFO backtype.storm.daemon.executor - Preparing bolt bolt:(3) 11595 [Thread-17-bolt] INFO backtype.storm.daemon.executor - Prepared bolt bolt:(3) 12040 [Thread-22-spout] ERROR backtype.storm.util - Halting process: ("Worker died") java.lang.RuntimeException: ("Worker died") at backtype.storm.util$exit_process_BANG_.doInvoke(util.clj:325) [storm-core-0.9.6.jar:0.9.6] at clojure.lang.RestFn.invoke(RestFn.java:423) [clojure-1.5.1.jar:na] at backtype.storm.daemon.worker$fn__4694$fn__4695.invoke(worker.clj:495) [storm-core-0.9.6.jar:0.9.6] at backtype.storm.daemon.executor$mk_executor_data$fn__3272$fn__3273.invoke(executor.clj:241) [storm-core-0.9.6.jar:0.9.6] at backtype.storm.util$async_loop$fn__460.invoke(util.clj:473) [storm-core-0.9.6.jar:0.9.6] at clojure.lang.AFn.run(AFn.java:24) [clojure-1.5.1.jar:na] at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131]
解决方法：
1、确认是否初始化collector
public void open(Map conf, TopologyContext context, SpoutOutputCollector collector) { this.collector = collector; }
2、确认是否是运行本地而不是集群的启动方式
集群方式： StormSubmitter.submitTopology("wordcount", config, builder.createTopology()); 本地方式： LocalCluster local = new LocalCluster(); local.submitTopology("wordcount", conf, builder.createTopology());
open方法
* 1、在任务集群的工作进程内被初始化,提供spout执行所需要的环境
* 2、conf参数是这个spout的strom配置,提供给拓扑与这台主机上的集群配置一起合并
* 3、context主要用来获取这个任务在拓扑中的位置信息,包括该任务的id,该任务的组件id,输入和输出消息等
* 4、collector是收集器,用于从spout发送元祖,收集器是线程安全的,应该作为这个spout对象的实例变量进行保存。
我的错误是第一种，然后解决了
storm单机运行报错 ERROR backtype.storm.daemon.executor -
标签：out context jar col rest type his oid oca
原文地址：https://www.cnblogs.com/51python/p/11006320.html
